Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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08.01.2017 |
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Epidemic levels of vitamin D deficiency in elite athletes are easily remedied
Seventy percent of Dutch elite athletes have too little vitamin D in their blood, write Dutch nutritionists in an article published in the European Journal of Clinical Nutrition. The shortage can easily be boosted by supplementing with 2200 units of vitamin D3. That's the same as 55 micrograms of vitamin D3, which will bring the vitamin D status up to a sufficiently high level after just three months.
Study
Results
The vitamin D level rose in all of the athletes during the summer. However, the increase was greatest in the athletes that took 2200 IU of the vitamin D3 supplement.
![]() When the vitamin D concentration rose above 125 nanomoles in the athletes who were taking 1100 or 2200 IU per day, the researchers intervened and lowered the dose to 400 IU per day in order to minimise the chance of side effects.
The 125 nanomoles norm is on the cautious side. Some nutritionists believe that vitamin D only becomes dangerous at a concentration of more than 250 nanomoles.
Conclusion
"After reaching a high total 25(OH)D concentration (125nmol/l), vitamin D supplementation of 400 IU/day is adequate to maintain a sufficient total 25(OH)D concentration."
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